Results 31 to 40 of about 8,057 (285)
Applied Sciences, 2023 This paper focused on the investigation of the blades for a carousel rotor of a wind turbine with a vertical axis. Cross sections of the single coherent (SC) and the dual coherent (DC) blades were compared in terms of the aerodynamic forces and ...
Marcin Augustyn, Filip Lisowski
doaj +1 more source
Attitude Control of a 2U Cubesat by Magnetic and Air Drag Torques [PDF]
IEEE Transactions on Control Systems Technology, 2019 This paper describes the development of a magnetic attitude control subsystem for a 2U cubesat. Due to the presence of gravity gradient torques, the satellite dynamics are open-loop unstable near the desired pointing configuration. Nevertheless the linearized time-varying system is completely controllable, under easily verifiable conditions, and the ...
Richard L. Sutherland +2 more
openaire +3 more sources
Numerical simulations of drag modulation by microbubbles in a turbulent Taylor-Couette flow [PDF]
, 2013 The aim of our study is to investigate numerically the interaction between a dispersed phase composed of microbubbles and a turbulent Taylor-Couette flow (flow within the gap between two cylinders).
CLIMENT, Eric +3 more
core
Application of Euler-Bernoulli finite element methods for torque and drag model verification [PDF]
, 2023 As the industry extends its search for hydrocarbons in remote locations, efficient extended reach drilling operations become crucial to reaching subsurface targets.
Elyas, Odai Alaa
core +1 more source
Biodegradable 3D‐Printable and Coatable Antifouling Composites for Marine Applications
Advanced Functional Materials, EarlyView.Marine biofouling damages submerged surfaces and raises greenhouse gas emissions. Biodegradable antifouling biocomposites were developed by hot‐mixing beeswax, Tween 80, and calcium stearate or stearic acid. Adjusting the component ratio enables processing via hot‐pressing, 3D‐printing, or dip‐coating.
Gabriele Corigliano +17 more
wiley +1 more source
Study of Torque, Drag and Hydraulics of a Deviated Drilled Well using Drilling Office Software [PDF]
Journal of Chemical and Petroleum Engineering, 2019 Rotational drilling was a revolution in drilling technology. It made the drilling process more efficient and faster and more depth of well could be achieved through rotation method.
Amir Hossein Saeedi Dehaghani +2 more
doaj +2 more sources
Drilling Torque and Drag Application [PDF]
, 2013 The drastic increases of the extended-reach wells since 1990s help emerges the drilling torque and drag application which is very useful in predicting the torque and drag during drilling operation. This application helps engineering team to plan extended-
Jaffir, Mohammad Zafarudin
core
Advanced Materials, EarlyView.This review examines passive, active, and hybrid liquid manipulation strategies, highlighting hybrid approaches as an emerging route to reconcile energy efficiency with adaptive control. By actively reconstructing passive surfaces to store programmable interfacial energy, hybrid systems enable flexible yet low‐power liquid transport, with perspectives ...
Jiaqi Miao +3 more
wiley +1 more source
Transferência de torque por corrente polarizada em spin através de pontas de contato [PDF]
, 2012 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-Graduação em FísicaA possibilidade de controlar a magnetização, a partir de uma corrente polarizada em spin, foi prevista por ...
Benetti, Luana Carina
core
Current‐Induced Domain Wall Dynamics in Pt/Co/Ni/Co Nanoribbons With Curvilinear Cross‐Sections
Advanced Materials, EarlyView.3D curvilinear magnetic racetrack nanoribbons are formed with concave and convex cross‐sections using an advanced multi‐photon 3D printer. The curvature is shown to strongly affect current‐induced domain wall motion along the nanoribbons. In nanoribbons with cross‐sections that have both concave and convex segments, the velocities of domain walls with ...
Tiange Dong +6 more
wiley +1 more source